Fix `Single` doc links #19832

	name: Action on PR labeled

	# This workflow has write permissions on the repo
	# It must not checkout a PR and run untrusted code

	on:
	pull_request_target:
	types:
	- labeled

	permissions:
	pull-requests: 'write'

	jobs:
	comment-on-breaking-change-label:
	runs-on: ubuntu-latest
	if: github.event.label.name == 'M-Needs-Migration-Guide' && !contains(github.event.pull_request.body, '## Migration Guide')
	steps:
	- uses: actions/github-script@v7
	with:
	script: \|
	await github.rest.issues.createComment({
	issue_number: context.issue.number,
	owner: context.repo.owner,
	repo: context.repo.repo,
	body: `It looks like your PR is a breaking change, but you didn't provide a migration guide.

	Could you add some context on what users should update when this change get released in a new version of Bevy?
	It will be used to help writing the migration guide for the version. Putting it after a \`## Migration Guide\` will help it get automatically picked up by our tooling.`
	})

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